Oxygen states present at a Ag(111) surface in the presence of ammonia: evidence for a NH₃–O₂^δ– complex

Abstract

Molecular oxygen states present at Ag(111) surfaces when dioxygen is coadsorbed with ammonia at 80 K are characterised by vibrational loss features at 1488 and 1640 cm^–1. The former is suggested to be associated with the NH₃···O₂^δ– complex, a key intermediate in the oxidation pathway.

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